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Is there a laptop where you can turn off the backlight of the screen completely?

I have a Pixel Qi tablet where you can turn off the backlight and I use that function all the time. Really saves the eyes if you read or write a lot.

Now, I would like to have that functionality in a laptop too, preferably with a 13.3 inch laptop screen or so.

I don't know how well the Pixel Qi company is doing, haven't seen a lot of updates from they're lately. Maybe there's another company which manufactures a similar screen that you can tip me about?

Again, I'm looking for a laptop where you can turn off the backlight of the screen entirely. Perhaps a Mirasol screen, or did that product turn into vaporware too?

The technology behind is somewhat irrelevant - what's important is that I want to be able to turn off the backlight.

Any tips?

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closed as off topic by Dave M, Ƭᴇcʜιᴇ007, BBlake, Renan, Indrek Oct 11 '12 at 17:51

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Although shopping requests/recommendations are off-topic for SU, and I think finding a notebook with this specific functionality would be impossible (never seen or heard of one personally), here's a generic hack that could work with many notebooks:

  • Open your notebook's LCD shell.
  • Find the two power lines that run to the LCD backlight's power inverter (assuming not LED backlit).
  • Put a small toggle switch inline with one of the wires.
  • Mount the toggle switch through the chassis/shell someplace.
  • Profit. :)


small toggle

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Is it really that easy? Are you saying that Pixel Qi technology does not add anything but a switch to screens? Are you certain that a normal screen would really display anything at all if the backlight were completely turned off. – Joey Hammer Oct 11 '12 at 17:07
I'm unfamilliar with Pixel Qi's products. My general experience is, if you turn off the backlight, you aren't reading anything (without being on a certain angle so room light reflects off it). :) – Ƭᴇcʜιᴇ007 Oct 11 '12 at 17:16
That's how I use the tablet right now, I can work on it using reflected light only. The question is whether your technique would produce a similar result to using a Pixel Qi screen or if it would differ somewhat : ) – Joey Hammer Oct 12 '12 at 3:29

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